[ Objective ] The paper was to study the factors influencing the synthesis of butyl polyglycosides and its synthesis kineties. [ Method ] In the synthesis process of alkyl polyglycosides by transglyeosidation method, ...[ Objective ] The paper was to study the factors influencing the synthesis of butyl polyglycosides and its synthesis kineties. [ Method ] In the synthesis process of alkyl polyglycosides by transglyeosidation method, p-toluenesulfonie acid and stearie acid were used as composite catalyst, intermediate product butyl polyglycosides was prepared via reactive distillation technology. [ Result ] The suitable preparation conditian of butyl polyglyeasides was as follows： catalyst usage, 1.2 g（ p-toluenesulfoni ：stearie acid = 6：1 ） ; reaction temperature, 110 ℃ ; the ratio of butanol and glucose, 8： 1. The results showed that the larger the molar ratio of butanol and glucose was,the more the butyl monoside content was, and the less the polymerizatian degree of butyl glyeasides was. The catalyst usage and reaction temperature had little influence on the component of butyl polyglyeesides. With the increase of catalyst usage or reaction temperature,the reaction time was shortened dramatically. The kinetic equation for the synthesis of butyl glueeside was finally obtained as follows： -dCA/dt =0.163 7exp（ -1. 968×10^3/RT）CA -0.003 49 exp （ -2.727×10^3/RT） Ce. [ Conclusionl The suitable condition for the preparation of butyl polyglyeasides and its synthesis kinetic equation obtained in the study could provide theoretical basis for the synthesis of long-chain alkyl polyglyeasides.展开更多
文摘[ Objective ] The paper was to study the factors influencing the synthesis of butyl polyglycosides and its synthesis kineties. [ Method ] In the synthesis process of alkyl polyglycosides by transglyeosidation method, p-toluenesulfonie acid and stearie acid were used as composite catalyst, intermediate product butyl polyglycosides was prepared via reactive distillation technology. [ Result ] The suitable preparation conditian of butyl polyglyeasides was as follows： catalyst usage, 1.2 g（ p-toluenesulfoni ：stearie acid = 6：1 ） ; reaction temperature, 110 ℃ ; the ratio of butanol and glucose, 8： 1. The results showed that the larger the molar ratio of butanol and glucose was,the more the butyl monoside content was, and the less the polymerizatian degree of butyl glyeasides was. The catalyst usage and reaction temperature had little influence on the component of butyl polyglyeesides. With the increase of catalyst usage or reaction temperature,the reaction time was shortened dramatically. The kinetic equation for the synthesis of butyl glueeside was finally obtained as follows： -dCA/dt =0.163 7exp（ -1. 968×10^3/RT）CA -0.003 49 exp （ -2.727×10^3/RT） Ce. [ Conclusionl The suitable condition for the preparation of butyl polyglyeasides and its synthesis kinetic equation obtained in the study could provide theoretical basis for the synthesis of long-chain alkyl polyglyeasides.
